some advice muhammed. I have a very strong barrier of skin on my lips now. The bottom lip is very strong. I only expect it to get stronger. Don't rip off any rough skin even if it's uncomfortable. Never before have i had such strength in the skin with EC. It is creating the stratum corneum. It's just steady now. No crazy overgrowth like with EC. No fragile skin. It's strong skin, uncomfortable at times. The stronger the better.